* {
    margin: 0px;
    padding: 0px;
}

body {
    margin: 0;
    height: 100vh;
    background: radial-gradient(circle, skyblue, pink 70%);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

#dv {
    width: 1692px;
    height: 650px;
    margin: 157px auto;
    border-radius: 10px;
    text-align: center;
    padding-top: 20px;
}

ul li {
    vertical-align: top;
    display: inline-block;
    width: 100px;
    height: 50px;
    border-radius: 35%;
    border: 3px dashed palevioletred;
    padding: 2.4374px;
    text-align: center;
    line-height: 50px;
    margin: 5px 5px;
    font-size: 17px;
    font-family: '楷体';
    font-weight: 900;
    color: yellow;
}

li.change {
    background: radial-gradient(circle, purple, skyblue 70%);
    font-size: 15px;
    color: #B6DCD9;
    font-weight: bolder;
}

#btu,
#btu1 {
    width: 100px;
    height: 50px;
    font-size: 15px;
    border-radius: 10px;
    cursor: pointer;
    margin: 10px 50px 0 50px;
    color: brown;
    background-color: pink;
    border: none;
    font-family: '楷体';
    font-weight: 900;
    font-size: 20px;
}

.ch {
    position: relative;
    width: 150px;
    height: 150px;
    border-radius: 10px;
    margin: 0 auto;
    border-radius: 35%;
    background-image: url('../Jpeg/64380cd7912397ddd91f09afdddb79b0d1a2879c.jpeg');
    background-size: 100% 100%;
    bottom: 5px;
}

.luc {
    font-weight: bold;
    margin: 10px auto;
    text-align: center;
    color: #E3DAE8;
    text-shadow: 2px 3px 1px #B6DCD9;
    font-family: '楷体';
    font-weight: 900;
    font-size: 20px;
}

.name {
    text-align: center;
    line-height: 150px;
    position: relative;
    font-size: 30px;
    font-family: '楷体';
    font-weight: 900;
    color: #E3DAE8;
}

.G_Z {
    position: relative;
    top: 508px;
    color: red;
    font-size: 20px;
    font-family: '楷体';
    font-weight: 900;
}